Yes, I think there is a sound difference between the goliath 2's and 3's (that was your question, right?). What they are, I couldn't tell ya. From the word on the street, the goliath 1 is the 'best' but that's just what I've been told. Go try them out and see what you like better. Or just do what I did... get whatever is the best price.

Also, I dunno about the ported issue BillyB brought up, but that's for another thread.